Implementation and characterization of liquid-level sensor based on a long-period fiber grating MachZehnder interferometer

Hongyan Fu; Xuewen Shu; Aping Zhang; Weisheng Liu; Lin Zhang; Sailing He; Ian Bennion

doi:10.1109/JSEN.2011.2145416

Implementation and characterization of liquid-level sensor based on a long-period fiber grating MachZehnder interferometer

Hongyan Fu, Xuewen Shu, Aping Zhang, Weisheng Liu, Lin Zhang, Sailing He, Ian Bennion

Research output: Journal article publication › Journal article › Academic research › peer-review

80 Citations (Scopus)

Abstract

An optical liquid-level sensor (LLS) based on a long-period fiber grating (LPG) interferometer is proposed and experimentally demonstrated. Two identical 3-dB LPGs are fabricated to form an in-fiber Mach-Zehnder interferometer, and the fiber portion between two LPGs is exposed to the liquid as the sensing element. The sensitivity and measurement range of the sensors employing different orders of cladding modes are investigated both theoretically and experimentally. The experimental results show good linearity and large measurement range. One of the significant advantages of such a sensing structure is that the measurement level is not limited to the length of the LPG itself. Also, the measurement range and sensitivity of the proposed LLS can be readily tailored for a particular applications.

Original language	English
Article number	5753906
Pages (from-to)	2878-2882
Number of pages	5
Journal	IEEE Sensors Journal
Volume	11
Issue number	11
DOIs	https://doi.org/10.1109/JSEN.2011.2145416
Publication status	Published - 2 Nov 2011
Externally published	Yes

Keywords

Fiber sensor
liquid-level sensor (LLS)
long-period fiber grating (LPG)
Mach-Zehnder interferometer

ASJC Scopus subject areas

Instrumentation
Electrical and Electronic Engineering

More information

10.1109/JSEN.2011.2145416

Cite this

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abstract = "An optical liquid-level sensor (LLS) based on a long-period fiber grating (LPG) interferometer is proposed and experimentally demonstrated. Two identical 3-dB LPGs are fabricated to form an in-fiber Mach-Zehnder interferometer, and the fiber portion between two LPGs is exposed to the liquid as the sensing element. The sensitivity and measurement range of the sensors employing different orders of cladding modes are investigated both theoretically and experimentally. The experimental results show good linearity and large measurement range. One of the significant advantages of such a sensing structure is that the measurement level is not limited to the length of the LPG itself. Also, the measurement range and sensitivity of the proposed LLS can be readily tailored for a particular applications.",

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AU - Fu, Hongyan

AU - Shu, Xuewen

AU - Zhang, Aping

AU - Liu, Weisheng

AU - Zhang, Lin

AU - He, Sailing

AU - Bennion, Ian

PY - 2011/11/2

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AB - An optical liquid-level sensor (LLS) based on a long-period fiber grating (LPG) interferometer is proposed and experimentally demonstrated. Two identical 3-dB LPGs are fabricated to form an in-fiber Mach-Zehnder interferometer, and the fiber portion between two LPGs is exposed to the liquid as the sensing element. The sensitivity and measurement range of the sensors employing different orders of cladding modes are investigated both theoretically and experimentally. The experimental results show good linearity and large measurement range. One of the significant advantages of such a sensing structure is that the measurement level is not limited to the length of the LPG itself. Also, the measurement range and sensitivity of the proposed LLS can be readily tailored for a particular applications.

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Implementation and characterization of liquid-level sensor based on a long-period fiber grating MachZehnder interferometer

Abstract

Keywords

ASJC Scopus subject areas

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